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Hybrid Transparent Electrodes Boost Efficiency and Lifespan of Perovskite Solar Cells
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Hybrid Transparent Electrodes Boost Efficiency and Lifespan of Perovskite Solar Cells
by Simon Mansfield
Sydney, Australia (SPX) Mar 06, 2025

Bifacial perovskite solar cells, known for their ability to capture sunlight from both the front and rear surfaces, have taken a significant step forward thanks to researchers at the Indian Institute of Technology (IIT) Dharwad. Their development of a novel NiO/Ag/NiO (NAN) hybrid transparent electrode has led to enhancements in efficiency, durability, and infrared transparency, opening new possibilities for solar energy applications.

A recent study published in the Journal of Photonics for Energy (JPE) details how the IIT Dharwad team designed and fabricated highly transparent bifacial solar cells utilizing a three-layer NAN electrode. This innovative structure, created using a low-energy physical vapor deposition method, resulted in an electrode with extremely low electrical resistance and high transmittance of visible light.

When incorporated into the bifacial solar cells, the NAN transparent electrode delivered impressive power conversion efficiencies (PCE), achieving 9.05% and 6.54% when exposed to light from different directions. The cells also exhibited a high bifaciality factor of 72%, demonstrating their effectiveness in utilizing light from both sides.

Beyond efficiency, these solar cells displayed exceptional durability, retaining 80% of their initial performance for over 1,000 hours without the need for protective encapsulation. Additionally, their ability to transmit substantial near-infrared light makes them suitable for applications such as thermal windows and advanced optoelectronic technologies.

With a thickness of less than 40 nm, the NAN electrode is particularly advantageous for integration into building materials and tandem solar cell systems. Senior researcher Dhriti Sundar Ghosh, an associate professor of physics at IIT Dharwad, emphasized the broad implications of their work, stating, "This study offers a blueprint for designing transparent electrodes in bifacial perovskite solar cells, paving the way for advancements in tandem devices, agrivoltaics, and automotive solar technologies."

The findings reinforce the growing potential of bifacial perovskite solar cells in renewable energy solutions, contributing to the development of more efficient and adaptable solar power technologies.

Research Report:Hybrid top transparent electrode for infrared-transparent bifacial perovskite solar cells

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Indian Institute of Technology
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